Perhaps you should try some spelling variations:
improving microscopy » imaging microscopy, improved microscope, improving microblog
problems improving » problem improving, problems involving, problem improved
integer java » integer data, integer base
integer dea » integer data, integer leaf, integer set
https » http

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((integer java) OR (integer dea)) problems improving microscopy https~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((integer java) OR (integer dea)) problems improving microscopy https".
• Adding a wildcard symbol may retrieve word variants: ((integer java) OR (integer dea)) problems improving microscopy https*.